Multi-Label Image Classification using KNN
Have you tried google searching? There are many results that come up for "multi-label k nearest neighbor image classification". Here are the first couple of papers to get you started:

http://proceedings.mlr.press/v25/chiang12/chiang12.pdf
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.86.9501&amp;rep=rep1&amp;type=pdf